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Tracking single-particle rotation during macrophage uptake

Journal Article · · Soft Matter
DOI:https://doi.org/10.1039/C5SM00893J· OSTI ID:1235366
 [1];  [1];  [2];  [1];  [1]
  1. Indiana Univ., Bloomington, IN (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

We investigated the rotational dynamics of single microparticles during their internalization by macrophage cells. The microparticles used were triblock patchy particles that display two fluorescent patches on their two poles. The optical anisotropy made it possible to directly visualize and quantify the orientation and rotation of the particles. We show that particles exhibit a mixture of fast and slow rotation as they are uptaken by macrophages and transiently undergo directional rotation during their entry into the cell. As a result, the size of the particles and the surface presentation of ligands exerted a negligible influence on this heterogeneity of particle rotation.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
Indiana Univ., Bloomington, IN (United States)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1235366
Report Number(s):
SAND--2015-3290J; 583488
Journal Information:
Soft Matter, Journal Name: Soft Matter Journal Issue: 26 Vol. 11; ISSN SMOABF; ISSN 1744-683X
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (7)

Janus particles: from synthesis to application journal September 2017
Janus particles for biological imaging and sensing journal January 2016
Effect of partial PEGylation on particle uptake by macrophages journal January 2017
Measuring rotational diffusion of colloidal spheres with confocal microscopy journal January 2016
Generation of 3-dimensional multi-patches on silica particles via printing with wrinkled stamps journal January 2018
Mono-patchy zwitterionic microcolloids as building blocks for pH-controlled self-assembly journal January 2019
Measuring rotational diffusion of colloidal spheres with confocal microscopy text January 2016

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